Power factor and three-phaseQuestion 1393 of 1506

A single-phase motor on a 240 V supply draws 40 A at a power factor of 0.7. What is the true power?

2.88 kW
9.60 kW
13.7 kW
6.72 kW

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Correct answer: 6.72 kW

P = V × I × PF = 240 × 40 × 0.7 = 6720 W = 6.72 kW.

Source: Computed, 11.3: Calculating Power Factor

Questions last reviewed: 18 October 2026

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